senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "SkXfermodeImageFilter.h" |
| 9 | #include "SkCanvas.h" |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 10 | #include "SkDevice.h" |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 11 | #include "SkColorPriv.h" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 12 | #include "SkReadBuffer.h" |
| 13 | #include "SkWriteBuffer.h" |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 14 | #include "SkXfermode.h" |
| 15 | #if SK_SUPPORT_GPU |
| 16 | #include "GrContext.h" |
| 17 | #include "effects/GrSimpleTextureEffect.h" |
| 18 | #include "SkGr.h" |
| 19 | #include "SkImageFilterUtils.h" |
| 20 | #endif |
| 21 | |
| 22 | /////////////////////////////////////////////////////////////////////////////// |
| 23 | |
commit-bot@chromium.org | 7b32070 | 2013-07-10 21:22:18 +0000 | [diff] [blame] | 24 | SkXfermodeImageFilter::SkXfermodeImageFilter(SkXfermode* mode, |
| 25 | SkImageFilter* background, |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 26 | SkImageFilter* foreground, |
senorblanco@chromium.org | b295fb6 | 2013-10-10 13:51:19 +0000 | [diff] [blame] | 27 | const CropRect* cropRect) |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 28 | : INHERITED(background, foreground, cropRect), fMode(mode) { |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 29 | SkSafeRef(fMode); |
| 30 | } |
| 31 | |
| 32 | SkXfermodeImageFilter::~SkXfermodeImageFilter() { |
| 33 | SkSafeUnref(fMode); |
| 34 | } |
| 35 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 36 | SkXfermodeImageFilter::SkXfermodeImageFilter(SkReadBuffer& buffer) |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 37 | : INHERITED(2, buffer) { |
reed@google.com | 3534822 | 2013-10-16 13:05:06 +0000 | [diff] [blame] | 38 | fMode = buffer.readXfermode(); |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 39 | } |
| 40 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame^] | 41 | void SkXfermodeImageFilter::flatten(SkWriteBuffer& buffer) const { |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 42 | this->INHERITED::flatten(buffer); |
| 43 | buffer.writeFlattenable(fMode); |
| 44 | } |
| 45 | |
| 46 | bool SkXfermodeImageFilter::onFilterImage(Proxy* proxy, |
| 47 | const SkBitmap& src, |
| 48 | const SkMatrix& ctm, |
| 49 | SkBitmap* dst, |
| 50 | SkIPoint* offset) { |
| 51 | SkBitmap background = src, foreground = src; |
| 52 | SkImageFilter* backgroundInput = getInput(0); |
| 53 | SkImageFilter* foregroundInput = getInput(1); |
commit-bot@chromium.org | 7b32070 | 2013-07-10 21:22:18 +0000 | [diff] [blame] | 54 | SkIPoint backgroundOffset = SkIPoint::Make(0, 0); |
| 55 | if (backgroundInput && |
| 56 | !backgroundInput->filterImage(proxy, src, ctm, &background, &backgroundOffset)) { |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 57 | return false; |
| 58 | } |
commit-bot@chromium.org | 7b32070 | 2013-07-10 21:22:18 +0000 | [diff] [blame] | 59 | SkIPoint foregroundOffset = SkIPoint::Make(0, 0); |
| 60 | if (foregroundInput && |
| 61 | !foregroundInput->filterImage(proxy, src, ctm, &foreground, &foregroundOffset)) { |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 62 | return false; |
| 63 | } |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 64 | |
senorblanco@chromium.org | 0682019 | 2013-12-12 21:00:58 +0000 | [diff] [blame] | 65 | SkIRect bounds, foregroundBounds; |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 66 | background.getBounds(&bounds); |
senorblanco@chromium.org | 0682019 | 2013-12-12 21:00:58 +0000 | [diff] [blame] | 67 | bounds.offset(backgroundOffset); |
| 68 | foreground.getBounds(&foregroundBounds); |
| 69 | foregroundBounds.offset(foregroundOffset); |
| 70 | bounds.join(foregroundBounds); |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 71 | if (!applyCropRect(&bounds, ctm)) { |
| 72 | return false; |
| 73 | } |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 74 | |
| 75 | SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height())); |
commit-bot@chromium.org | cd3b15c | 2013-12-04 17:06:49 +0000 | [diff] [blame] | 76 | if (NULL == device.get()) { |
| 77 | return false; |
| 78 | } |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 79 | SkCanvas canvas(device); |
senorblanco@chromium.org | 0682019 | 2013-12-12 21:00:58 +0000 | [diff] [blame] | 80 | canvas.translate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top())); |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 81 | SkPaint paint; |
| 82 | paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 83 | canvas.drawBitmap(background, SkIntToScalar(backgroundOffset.fX), |
| 84 | SkIntToScalar(backgroundOffset.fY), &paint); |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 85 | paint.setXfermode(fMode); |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 86 | canvas.drawBitmap(foreground, SkIntToScalar(foregroundOffset.fX), |
| 87 | SkIntToScalar(foregroundOffset.fY), &paint); |
senorblanco@chromium.org | 0682019 | 2013-12-12 21:00:58 +0000 | [diff] [blame] | 88 | canvas.clipRect(SkRect::Make(foregroundBounds), SkRegion::kDifference_Op); |
| 89 | paint.setColor(SK_ColorTRANSPARENT); |
| 90 | canvas.drawPaint(paint); |
commit-bot@chromium.org | 1a4fb70 | 2013-09-26 16:09:28 +0000 | [diff] [blame] | 91 | *dst = device->accessBitmap(false); |
senorblanco@chromium.org | 6776b82 | 2014-01-03 21:48:22 +0000 | [diff] [blame] | 92 | offset->fX = bounds.left(); |
| 93 | offset->fY = bounds.top(); |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 94 | return true; |
| 95 | } |
| 96 | |
| 97 | #if SK_SUPPORT_GPU |
| 98 | |
commit-bot@chromium.org | 7b32070 | 2013-07-10 21:22:18 +0000 | [diff] [blame] | 99 | bool SkXfermodeImageFilter::filterImageGPU(Proxy* proxy, |
| 100 | const SkBitmap& src, |
commit-bot@chromium.org | 1aa54bf | 2013-08-05 16:53:50 +0000 | [diff] [blame] | 101 | const SkMatrix& ctm, |
commit-bot@chromium.org | 7b32070 | 2013-07-10 21:22:18 +0000 | [diff] [blame] | 102 | SkBitmap* result, |
| 103 | SkIPoint* offset) { |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 104 | SkBitmap background; |
commit-bot@chromium.org | 7b32070 | 2013-07-10 21:22:18 +0000 | [diff] [blame] | 105 | SkIPoint backgroundOffset = SkIPoint::Make(0, 0); |
commit-bot@chromium.org | 1aa54bf | 2013-08-05 16:53:50 +0000 | [diff] [blame] | 106 | if (!SkImageFilterUtils::GetInputResultGPU(getInput(0), proxy, src, ctm, &background, |
commit-bot@chromium.org | 7b32070 | 2013-07-10 21:22:18 +0000 | [diff] [blame] | 107 | &backgroundOffset)) { |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 108 | return false; |
| 109 | } |
commit-bot@chromium.org | b8d00db | 2013-06-26 19:18:23 +0000 | [diff] [blame] | 110 | GrTexture* backgroundTex = background.getTexture(); |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 111 | SkBitmap foreground; |
commit-bot@chromium.org | 7b32070 | 2013-07-10 21:22:18 +0000 | [diff] [blame] | 112 | SkIPoint foregroundOffset = SkIPoint::Make(0, 0); |
commit-bot@chromium.org | 1aa54bf | 2013-08-05 16:53:50 +0000 | [diff] [blame] | 113 | if (!SkImageFilterUtils::GetInputResultGPU(getInput(1), proxy, src, ctm, &foreground, |
commit-bot@chromium.org | 7b32070 | 2013-07-10 21:22:18 +0000 | [diff] [blame] | 114 | &foregroundOffset)) { |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 115 | return false; |
| 116 | } |
commit-bot@chromium.org | b8d00db | 2013-06-26 19:18:23 +0000 | [diff] [blame] | 117 | GrTexture* foregroundTex = foreground.getTexture(); |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 118 | GrContext* context = foregroundTex->getContext(); |
| 119 | |
| 120 | GrEffectRef* xferEffect = NULL; |
| 121 | |
| 122 | GrTextureDesc desc; |
| 123 | desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit; |
| 124 | desc.fWidth = src.width(); |
| 125 | desc.fHeight = src.height(); |
| 126 | desc.fConfig = kSkia8888_GrPixelConfig; |
| 127 | |
| 128 | GrAutoScratchTexture ast(context, desc); |
| 129 | SkAutoTUnref<GrTexture> dst(ast.detach()); |
| 130 | |
| 131 | GrContext::AutoRenderTarget art(context, dst->asRenderTarget()); |
| 132 | |
| 133 | SkXfermode::Coeff sm, dm; |
senorblanco@chromium.org | fbcd415 | 2013-10-23 14:03:22 +0000 | [diff] [blame] | 134 | if (!SkXfermode::AsNewEffectOrCoeff(fMode, &xferEffect, &sm, &dm, backgroundTex)) { |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 135 | return false; |
| 136 | } |
| 137 | |
commit-bot@chromium.org | 7b32070 | 2013-07-10 21:22:18 +0000 | [diff] [blame] | 138 | SkMatrix foregroundMatrix = GrEffect::MakeDivByTextureWHMatrix(foregroundTex); |
| 139 | foregroundMatrix.preTranslate(SkIntToScalar(backgroundOffset.fX-foregroundOffset.fX), |
| 140 | SkIntToScalar(backgroundOffset.fY-foregroundOffset.fY)); |
| 141 | |
| 142 | |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 143 | SkRect srcRect; |
| 144 | src.getBounds(&srcRect); |
| 145 | if (NULL != xferEffect) { |
commit-bot@chromium.org | 42dacab | 2013-07-13 17:24:24 +0000 | [diff] [blame] | 146 | GrPaint paint; |
| 147 | paint.addColorTextureEffect(foregroundTex, foregroundMatrix); |
| 148 | paint.addColorEffect(xferEffect)->unref(); |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 149 | context->drawRect(paint, srcRect); |
| 150 | } else { |
commit-bot@chromium.org | 42dacab | 2013-07-13 17:24:24 +0000 | [diff] [blame] | 151 | GrPaint backgroundPaint; |
commit-bot@chromium.org | 7b32070 | 2013-07-10 21:22:18 +0000 | [diff] [blame] | 152 | SkMatrix backgroundMatrix = GrEffect::MakeDivByTextureWHMatrix(backgroundTex); |
commit-bot@chromium.org | 42dacab | 2013-07-13 17:24:24 +0000 | [diff] [blame] | 153 | backgroundPaint.addColorTextureEffect(backgroundTex, backgroundMatrix); |
| 154 | context->drawRect(backgroundPaint, srcRect); |
| 155 | |
| 156 | GrPaint foregroundPaint; |
| 157 | foregroundPaint.setBlendFunc(sk_blend_to_grblend(sm), sk_blend_to_grblend(dm)); |
| 158 | foregroundPaint.addColorTextureEffect(foregroundTex, foregroundMatrix); |
| 159 | context->drawRect(foregroundPaint, srcRect); |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 160 | } |
senorblanco@chromium.org | 6776b82 | 2014-01-03 21:48:22 +0000 | [diff] [blame] | 161 | offset->fX = backgroundOffset.fX; |
| 162 | offset->fY = backgroundOffset.fY; |
senorblanco@chromium.org | 86fc266 | 2013-05-31 17:49:12 +0000 | [diff] [blame] | 163 | return SkImageFilterUtils::WrapTexture(dst, src.width(), src.height(), result); |
| 164 | } |
| 165 | |
| 166 | #endif |